Definition: Mode effect

Category: Memobust Glossary

Definition 1 : Effect that using a specific mode has on the responses that are obtained in that mode. Mode effects may be interpreted as a form of measurement bias.

Definition 2 : A pure mode effect is essentially a measurement bias that is specifically attributable to the mode. In some surveys the mode effects are small because the same questionnaire can be used across all modes. Most problems occur when mail is combined with an interviewer- administered mode. https://ec.europa.eu/eurostat/cros/content/memobust-glossary-pdf-file_en